Excluded paths in nested configurations seem to resolve to invalid paths

New Issue Checklist

• Updated SwiftLint to the latest version
• I searched for existing GitHub issues

Describe the bug

Exluded paths in nested configurations currently do not seem to work.

Environment

• SwiftLint version (run swiftlint version to be sure)? 50.3
• Installation method used (Homebrew, CocoaPods, building from source, etc)? Building from source and using Homebrew
• Paste your configuration file:

allow_zero_lintable_files: true

• Are you using nested configurations? Yes
  If so, paste their relative paths and respective contents. -> See below
• Which Xcode version are you using (check xcodebuild -version)? 14.1
• Do you have a sample that shows the issue?

I created a small Test:

TestFolder
├── .swiftlint.yml
└── SubFolder
    ├── .swiftlint.yml
    └── testFile.swift

yml at TestFolder/.swiftlint.yml

allow_zero_lintable_files: true

yml at TestFolder/SubFolder/.swiflint.yml

disabled_rules:
    - nesting

excluded:
    - testFile.swift

allow_zero_lintable_files: true

Contents of testFile.swift:

import Foundation

struct TestStruct {
    let a = 1
    let b = 2

    struct Nested {
        let c = 3

        struct Nested {
            let d = 4
        }
    }
}

The result being that if SwiftLint is run in TestFolder the file does not get excluded but if it is run in SubFolder it is excluded

I used the debugger with the current master and the excluded paths for the child resolve to TestFolder/SubFolder/SubFolder/testFile.swift instead of TestFolder/SubFolder/testFile.swift which causes the file to not be skipped in Configuration+CommandLine groupFiles. But I don't know if this is caused by a code issue or user error on my side.

Start with Configuration+CommandLine and its groupFiles path handling. Reproduce the nested TestFolder/SubFolder layout using the configurations and testFile.swift described in the issue, then trace why the child exclusion resolves to TestFolder/SubFolder/SubFolder/testFile.swift. Done means running SwiftLint from TestFolder correctly excludes testFile.swift, while the existing SubFolder behavior remains correct.